Causal–Hierarchical Network of Sport-Specific Physical Fitness in Chinese Male University Tennis Athletes: Policy Insights from a Delphi–fuzzy DEMATEL–ISM Analysis. LEX [Internet]. 2025 Oct. 17 [cited 2025 Oct. 25];23(8). Available from: https://lex-localis.org/index.php/LexLocalis/article/view/345-062